Changes between Initial Version and Version 1 of Null


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Timestamp:
Dec 23, 2015, 1:14:44 AM (4 years ago)
Author:
rogerdpack
Comment:

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  • Null

    v1 v1  
     1There are several ways to "output to null" in FFmpeg.
     2
     3there is the null muxer, like
     4
     5     ffmpeg -i INPUT -f null out.null # file out.null will not be created
     6
     7There is the null video sink:
     8
     9https://ffmpeg.org/ffmpeg-filters.html#nullsink (not clear if you can actually use this from the command line)
     10
     11or just output to /dev/null (or the reserved filename NUL in windows) for your file to just disappear.
     12
     13     ffmpeg -i INPUT -f rawvideo /dev/null # avoids doing any conversion before writing time (may still demuxes and decodes the input though)
     14
     15
     16All useful in testing/analyzing when you don't want the "writing out" part to get in your way.  See also the "-benchmark" parameter.
     17
     18There may be a way to use the "-map" parameter as well, unclear.